MH88435AD-P 查看數據表（PDF） - Mitel Networks

零件编号

产品描述 (功能)

生产厂家

MH88435AD-P

Data Access Arrangement

Mitel Networks 

Preliminary Information

MH88435-P

TIP

D2

RING

+5V

C2 +

R2

R7

9 25 24 22 21 13 11

R4

28 TIP

VX 5

R1

L2

D1

MH88435

4

VR-

3

VR+

RV 16

C1

C8

LCD 15

LC 6

L1 27

NB1 1

RING

NB2 2

AGND VBIAS ZA

8

10

7

C7

C6 +

Zext

= Ground (Earth)

R3

C3 Analog

Output

R5

C4 Analog

Input

R6

C5 Analog

Input

Ringing Voltage Detect Output

Loop Current Detect Output

Loop Control Input

ZB

Notes:

1) R1 & C1: Dummy Ringer, country specific

typically 0.39µF, 250V & 3kΩ

2) R2: DC Mask Resistor typical 360kΩ

3) R3 & R4: Transmit Gain Resistors ≥ 2k2

4) R5 = R6: Receive Gain Resistors typically 100k

5) ZB: Network Balance Impedance

6) C2, C6 = 10µF 6V

7) C7 & C8 = 39nF for 12kHz filter and 22nF for

16KHz filter. These can be left off if meter pulse

filtering not required.

8) Zext: External Impedance

9) D1 Zener Diode 6V2

10) L1, L2 = 4m7H 80mA. These can be left off if

meter pulse filtering not required.

11) C3, C4 & C5 = 1µF coupling capacitors

12) R7 = 620kΩ (30V RMS ringing sensitivity)

13) D2 = Teccor P3100SB

Figure 5 - Typical Application Circuit

2-45

Share Link: